[Full Changelog](https://github.com/auth0/java-jwt/compare/3.19.2...4.0.0-beta.0)

💡 Check the [Migration Guide](https://github.com/auth0/java-jwt/blob/master/MIGRATION_GUIDE.md) to understand the changes required to migrate your application to v4.

**Added**

- JavaDoc updated [\#577](https://github.com/auth0/java-jwt/pull/577) ([poovamraj](https://github.com/poovamraj))

- Add Migration Guide [\#576](https://github.com/auth0/java-jwt/pull/576) ([jimmyjames](https://github.com/jimmyjames))

- Expose claim name and header constants [\#574](https://github.com/auth0/java-jwt/pull/574) ([jimmyjames](https://github.com/jimmyjames))

- Added support for multiple checks on a single claim [\#573](https://github.com/auth0/java-jwt/pull/573) ([poovamraj](https://github.com/poovamraj))

- Improved README structure [\#571](https://github.com/auth0/java-jwt/pull/571) ([poovamraj](https://github.com/poovamraj))

- Improved Exception Handling [\#568](https://github.com/auth0/java-jwt/pull/568) ([poovamraj](https://github.com/poovamraj))

- Predicate based Claim verification [\#562](https://github.com/auth0/java-jwt/pull/562) ([poovamraj](https://github.com/poovamraj))

- Add lint checks [\#561](https://github.com/auth0/java-jwt/pull/561) ([poovamraj](https://github.com/poovamraj))

- Support date/time custom claim validation [\#538](https://github.com/auth0/java-jwt/pull/538) ([jimmyjames](https://github.com/jimmyjames))

- Add Instant support [\#537](https://github.com/auth0/java-jwt/pull/537) ([jimmyjames](https://github.com/jimmyjames))

- Testing Java LTS versions [\#536](https://github.com/auth0/java-jwt/pull/536) ([poovamraj](https://github.com/poovamraj))

**Changed**

- Null claim handling [\#564](https://github.com/auth0/java-jwt/pull/564) ([poovamraj](https://github.com/poovamraj))

- Undeprecate Single Key Constructor for Algorithms [\#551](https://github.com/auth0/java-jwt/pull/551) ([poovamraj](https://github.com/poovamraj))

- Update documentation and undeprecate single content sign methods [\#550](https://github.com/auth0/java-jwt/pull/550) ([poovamraj](https://github.com/poovamraj))

- Update test deps [\#539](https://github.com/auth0/java-jwt/pull/539) ([jimmyjames](https://github.com/jimmyjames))

**Deprecated**

- Deprecate secp256k1 curve for EC Algorithms [\#540](https://github.com/auth0/java-jwt/pull/540) ([poovamraj](https://github.com/poovamraj))

**Removed**

- Remove ES256K support [\#556](https://github.com/auth0/java-jwt/pull/556) ([poovamraj](https://github.com/poovamraj))

- Remove impl package export in module-info [\#553](https://github.com/auth0/java-jwt/pull/553) ([poovamraj](https://github.com/poovamraj))

- Remove internal Clock [\#533](https://github.com/auth0/java-jwt/pull/533) ([jimmyjames](https://github.com/jimmyjames))

**Fixed**

- Improve keyprovider reliability [\#570](https://github.com/auth0/java-jwt/pull/570) ([poovamraj](https://github.com/poovamraj))

- Support date/time custom claim validation [\#538](https://github.com/auth0/java-jwt/pull/538) ([jimmyjames](https://github.com/jimmyjames))

- Test only change - remove unnecessary throws clause from tests [\#535](https://github.com/auth0/java-jwt/pull/535) ([jimmyjames](https://github.com/jimmyjames))

**Security**

- Updated documentation regarding HMAC Key length [\#580](https://github.com/auth0/java-jwt/pull/580) ([poovamraj](https://github.com/poovamraj))

**Breaking changes**

- Added support for multiple checks on a single claim [\#573](https://github.com/auth0/java-jwt/pull/573) ([poovamraj](https://github.com/poovamraj))

- Improve keyprovider reliability [\#570](https://github.com/auth0/java-jwt/pull/570) ([poovamraj](https://github.com/poovamraj))

- Remove ES256K support [\#556](https://github.com/auth0/java-jwt/pull/556) ([poovamraj](https://github.com/poovamraj))

- Remove impl package export in module-info [\#553](https://github.com/auth0/java-jwt/pull/553) ([poovamraj](https://github.com/poovamraj))

- Fix header claims serialization [\#549](https://github.com/auth0/java-jwt/pull/549) ([jimmyjames](https://github.com/jimmyjames))

- Serialize dates in collections as seconds since epoch [\#534](https://github.com/auth0/java-jwt/pull/534) ([jimmyjames](https://github.com/jimmyjames))

- Replace com.auth0.jwt.interfaces.Clock with java.time.Clock [\#532](https://github.com/auth0/java-jwt/pull/532) ([jimmyjames](https://github.com/jimmyjames))